cant log on to my MS account, or update anything. Same error as affecting everyone else.
That sounds different from what is being reported here. Also, there are workarounds to get the RT "up to date". And finally I think the only people who are affected at all by either problem are those who have tried to do a factory refresh.
I have been meaning to mention also a detail which has not been discussed much. Apparently KB3000850 may not be offered any more, yet that (as I mentioned) is what I still see as my "Most recent cumulative update". I have tried elsewhere in these forums
to find out what others are seeing now instead for that. E.g. I imagine in most cases it will be KB2919355. You need to get into the modern
View your update history and apparently there is no automated way of getting there. E.g. one way would be to start from
Search Settings (press Win-w), and type something that matches View your update history for Windows (vi up his works for me and just
vi is enough to see it listed first), then press Enter.
Windows Image File Boot (WIMBoot) Overview
<quote>
November 2014: Windows 8.1 Update PCs configured with WIMBoot will not receive November Update (KB3000850).
</quote>
So I think a natural question to arise seeing this fact would be: "Does a factory refresh of a Win 8.1 RT result in a PC configured with WIMBoot?" If so it could explain why so few others would see KB3000850 as their "Most recent cumulative update" and
then it might also explain some missing functionality that would account for their problem symptoms.
FYI
Robert